Research And Software Realization Of Data Transmission Technology Of Telemetry Seismograph

Exploration seismology is a branch of Geophysics ,and its ultimate principle is that research the subterranean deposit and resolve engineering problems and environment problems. With the development of economy in our country, the energy demands increase, the situation that seismic prospecting will have a vigorous period is forseed. Exploration seismology as an often-used geophysical prospecting method has many advantages such as less cost, high efficiency, visual results, so its application areas include every phase of the infrastructure construction and energy exploration. The seismic prospecting instruments will enter a new fast development period. The next generation seismic prospecting instruments will be the integration of sensor, location, acquisition and transmission with the high automatization and intellectuality, but they also will be the free combination system in which has the compatible cable and wireless and has not the fixed models. Though many techniques of seismograph have been developed, the new techniques in practical applications have many problems such as limitations, the 5th generation 24bit telemetric seismograph will be the key of the research for a long period. Though in our country the demands for the seismic prospecting instruments are great, the research institute pay more attention to research the seismic prospecting methods and the data processing software than research the instruments which have a long distance compared with the foreign countries'. The instruments of foreign countries have the 90% market share in the instrument market. Based on the research situation, the lab in jilin university have made the research for a long period, finished overtaking in the many hardware techniques of the system and made progress in the phasal sense.The network data transmission technology of the telemetry seismograph in foreign research institution was considered the key technology for the blockade, and the lab telemetry the seismograph want to find a way to expand the number of data transfer rates to the rule of the bottleneck problems in a data transmission technology which needed to devoted to the research. The papers have done the in-depth study of the distributed telemetry the seismograph of data transmission technology and upper software for tracking control. First, this article is based on the basic principles of exploration seismology, this paper studies the seismograph national and international situation and developing trends of the study. Based on the distributed the seismograph cable data transmission technology, such as LDVS, RS -485, CAN and LAN technology for research and do some comparative analysis in the field of application. Based on telemetry seismograph of the relay ethernet, make a analysis for data transmission and real-time performance. To adopt a mixed agreement of the ethernet and give the concrete realization method.In addition, ethernet technology in a large collection of data transmission control systems have been widely used, ethernet and the tcp/ip protocol in a lot of control has been approved. But seismic data collection systems call for higher , the industrial sector of the ethernet technology could not fully satisfy the needs of the gathering. Besides the ethernet structer and transmission medium, in the transport protocol must also study ways to improve, the paper mainly in the tcp/ip protocol cluster overview of the main agreements and analysis. In the tcp/ip protocol of the schemes, adopted by the local system design and optimize the use of a system of the network card drivers and use zero copying techniques between the transport protocols to achieve the objective of seismic data transfer rates.At last, based on laboratory telemetry the in the tcp/ip protocol of the plan, adopted by the local system design and optimize the use of a system of the network card drivers and the transport protocol is between zero copying techniques to achieve the objective of seismic data transfer rates seismograph the efficiency of the problem, in order to achieve complete the seismograph transport system, the paper accomplish a set of functions which include a more perfect tracking control software of the upper computer. Through various functions modular design, implementation of effective monitoring system. in software is modularized specific design aimed at present, the seismograph tracking control software a single data format file, with resolve in a seg -2 according to the file format resolved on the basis of an international application of more widely seg - y format file that reads and make the graphical display; As telemetry for the need of the laboratory three-dimensional seismograph we design the building management functions of a two-dimensional and three-dimensional seismograph, line up the function of graphical data ; for the large amount, graphical appear on the screen shining and the slower speed, the paper adopts a pair of the technology to reduce the graphics time and improve the software ability on system collection of real-time monitoring, at the same time increases in the graphic design large format printing function of the page for the technical staff reference. With the test of experiment by functional modules, testing and the system unit tests for all aspects of the continuous improvement and optimized, and through the software system of a whole, verify that the upper the software functionality and improve data collection system for earthquake monitoring and control functions. At the same time the experiment results from the side of the lab telemetry prove the seismograph transmission properties and the necessity of studying.Overall, based on the telemetry seismograph network structure of ethernet technology, the data transmission problems and timely analysis, the paper proposes to adopt a method based on agreement between the ethernet to improve the seismograph data transfers of real and definitive problem .For the telemetry seismograph ethernet and tcp/ip network transmission technology agreement to research and analysis, and adopt a transport protocol based on zero copying of data in different ways to shorten the processing time steps. Finally, the papers on the seismograph telemetry systems gives the upper of the tracking control software design and implementation and integration for telemetry the seismograph data transmission technology research and the instruments of a transmission control, to improve the efficiency of the purpose of data transmission. The contents of the study focused on the domestic telemetry the seismograph data transfer rates and gathering way for the expansion of the bottleneck problems and put forward his theory research improvement and telemetry the seismograph data transmission system based on the upper machine the way to optimize the software for tracking control design and implementation work, the laboratory telemetry the seismograph on field exploration production efficiency of the question of laboratory telemetry the seismograph study of the practical significance.